Winding chuck



Sem. 25 w23, EMME@ E. BERGMAN WINDING CHUCK Filed Aug. 11,' 1922 Patented Sept. 25, 1923.

v'NITED EDWARD BERGMAN, OF NEW YORK, N. Y., ASSIGNOR TO C. BRANDES, INC., OF NEW YORK, N. Y., A CORPORATION 0F NEW YORK.

WINDING CHUCK.

Application filed August 11, 1922. Serial No. 581,155.

To all whom it may concern:

Be it known that I, EDWARD BERGMAN, a citizen of the United States, residing at New York, in the county of New York, State of New York, have invented certain new and useful Improvements in Winding Chucks; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates' to machines or tools for winding electro-magnets and has for its principal object the provision of a chuck which is especiall adapted for holding and properly positioning electro-magnet cores to facilitate winding operations thereon.

A further object is the provision of a. chuck of the above mentioned character into which an electro-magnet core can be very quickly inserted and secured in position for the winding operation, and requiring no skilled manipulation.

A further object is the provision in such a chuck of simple and suitable means for holding the starting end of the magnet wire durin the winding operation he structure constituting the preferred embodiment of the invention, as described in detail hereinafterl )accomplishes all the aforementioned objects, and comprises, briefly, a rotatable face-plate having means for properly locating or positioning an electro-magnet core, a securing member overlying the face-plate and in threaded engagement therewith and having an opening which is arranged to permit the insertion of the magnet core into engagement with the positioning means on the face-plate. With' the magnet core thus'inserted, the securing member may be rotated with respect to the face-plate and, by reason of its thread engagement therewith, the core may be clamped between the face-plate and the securing member, all in a manner which will be clearly shown. An important, thoughsimple, feature of the invention resides in the provision of one or more spring clips which are, preferably, located on the periphery of the securing member, the purpose of which is to hold the starting end of the magnet wire during the winding operation. I

The invention will be more clearly understood from the following detailed description with reference to the accompanying drawing, in which, y

Fig. 1 is a view, partly in elevation, and partly in cross-section of an assembled winding chuck in accordance with the preferred embodiment of the invention;

Fig. 2 is a front elevation of the chuck shown in Fig. l;

Fig. 3 is .a front elevation of the face-plate of the chuck;

' Fig. 4 is a front elevation of the nestplate; and,

Fig. 5 is a front elevation of the securing member .or ring.

Referring more particularly to Figs. l and 2, the shaft l is that of a winding machine and is journaled in the bearing 2, suitable provision, not shown, being made for rotating the shaft at relatively high speed.

A face-plate 3 is rigidly secured to the shaft 1 and rotatable therewith. This faceplate may be of machine steel and has a left hand screw thread on its periphery as indicated at 4. Y

A steel nest-plate 5, which is shown more clearly in Fig. 4 is secured by flat head screws 6 to the face of the face-plate. rThe nest-plate has an aperture 5 of suitable size and contour to fit one leg of the angle-shaped electro-magnet core 7 on which the winding is to be placed. The magnet core 7 is shown in Fig; 4 in order to illustrate the fact that the winding receiving portion is located coaXially with the nest-plate'and face-plate by virtue of the aperture 5. A side elevation of the magnet core 7 is shown in Fig. l, and a front elevation thereof is shown in Fig. 2, in both of which views the magnet core is shown secured in the chuck. The magnet core 7 has two spool heads 8 and 9 between which the magnet winding is placed.

An annular securing member 10, which is preferably of machine steel, is provided with an inside screw thread as shown at li, whereby it engages the face-plate 3 and is rotatable with respect thereto, and at the same time adjustable in a direction parallel with the axis of shaft l. This securing member has an aperture l0 of suitable size to permit the insertion therethrough of the vertical leg of the magnet core into the aperture 5 of nestplate 5. But with the aperture 10 positioned as indicated in Fig. 2 the magnet core could not be so inserted as will'be evident from anexamination of Fig. 2. lf, however, 110

the securing member 10 is rotated with respect to the face-plate 8 into a position wherein the portion 1() of the aperture 10 registers with aperture 5', the vertical leg of the magnet core may be inserted in the chuck as shown in' Figs. 1 and 2.

Since the screw thread 4 is left handed, a counter clockwise turn of the securing member 10, as viewed in Fig. 2, will effect a movement ofthe overlyino portion thereof t0- ward the face of the ace-plate, .and as will be obvious, the vertical leg of the magnet core will be clamped between the securing member and the face-plate. In Fig. 2, the magnet core is shown thus vclamped in the chuck and ready for the winding operation.

A stop 11 is rigidly secured to the back of the `face-plate, anda pin 12 carried by the securing member 10 cooperates with the stop 11 to limit the rotary movement of the securing member with respect to the face-plate. When pin 12 engages stop 11, the enlarged portion 10a of aperture 10 registers with aperture 5.

A pair of spring clips 13 are attached to the periphery of the securing member 10 by means of screws 14. The function of these spring clips is to, hold the starting end ofl the magnet wire during the winding operations. The end of the wire is slipped under one of the spring clips and held by the tension ofthe spring. It is not essential to have more than one of these spring clips, ybut it is found convenient to have two.

It is thought that the operation of winding the magnet will be readily understood.

without further description.

The nest-plate 5 is` not essential to the in many alternative forms, it is not to be construed as limited to the form described, but only by the scope of the appended claims. I claim: l. 4A rotatable chuck for winding electromagnets, comprising a member having a recess adapted for receiving and properly positioning an electro-magnet core with respect'to the axis of rotation of the chuck, and a securing member for'the electro-magnet core, said securing member having an aperture adaptedto permitaportion of the core being passed-therethroughinto said recess, said securing member being operable to .y clamp said core 1n said recess.

2. In a winding chuck, a rotatable member having means for receiving and properly positioning a magnet core, and asecuring member having an aperture through which a portion of said magnet core may be inserted to engage with said means, said securing member being movable into al plurality of positions relative to said rotatable member and adapted in certain of said positions to permit the insertion of said magnet core into engagement with said means, and operable in certain other of said positions to secure said magnet core in the chuck.

3. In a winding chuck, a rotatable faceplate having a recess for receiving and properly positioning a magnet core so that the winding receiving portion of the core is substantially coaxial with said face plate, a securing member having an aperture adapted to permit a portion of said magnet core being inserted therethrough and into said recess, said securing member and said face-plate being jointly operable to clamp said magnet core in said recess.

4. In a winding chuck, a rotatable faceplate having a recess for receiving and properly positioning a magnet core so that the winding receiving portion of the core is substantially co-axial with said falce-plate, a` securing member having an aperture adapted to permit a portion of said magnet core being inserted therethrough and into said recess, said securing member having a screw thread whereby it is adapted to rotate with respect to said face-plate and simultaneously move in a direction parallel to the axis thereof whereby said magnet core may be clamped in said recess.

5. Ina windingchuck, a rotatable faceplate having a recess for receiving and properly positioning a magnet c/ore/So that the winding receiving portion of the core is substantially co-aXial with said -face-plate, said face-plate having a screw thread on its peripheral portion, a securing member having an aperture adapted to permit a portion of said magnet core being insulated therethrough and into said recess, said securing member having a screw thread engaging with the screw thread on said face-plate whereby said securing member is adapted to rotate with respect to said face-plate and to simultaneously move in a direction parallel to the axis thereof whereby said magnet core may be clamped in lsaid recess.

6. In a winding chuck, a rotatable faceplate having means for receiving and properly positioning a magnet core so that the winding receiving portion of the core is substantially co-axial with said face-plate, means operable iointly with said face-plate for securing said magnet core, and a spring clip for holding the starting end of the wire durinlg the winding operation.

7. n a winding chuck, a rotatable faceplate, a nest-plate secured to the face of said ture through which a portion of the magnet face-plate, said-nest-plate having an apercore may be passed for insertion into the ture proportioned to receive and properly' aperture in said nest-plate, said securing 10 position the core of an electroanagnet, and member being operable by rotation to clamp a securing member overlying-said nest-plate said magnet core against said face-plate.

and in threaded engagement with said face- In testimony whereof l a'lx mJ signature. plate, said securing member having an aper- EDWARD BE GMAN. 

